Disassembly Report: PaMu Slide Mini True Wireless Bluetooth Earphones

PaMu is an emerging brand focused on the audio field, with team members having rich experience in audio and technology. The high-end brand under it, Pamu, has won multiple international design awards. Previously, I Love Audio Network disassembled the PaMu Tempo T5 true wireless stereo Bluetooth earphones, which borrowed elegant and fashionable elements from Chinese architecture for its charging case, and the built-in 1000mAh large-capacity battery provides a longer battery life for the earphones; the PaMu X13 true wireless Bluetooth earphones have a chessboard-style unique design for both the charging case and earphones, and the earphones are ergonomically designed, making them not easy to fall off during sports. This time we are disassembling the PaMu Slide Mini, which uses the Qualcomm QCC3020 flagship chip, supports Bluetooth 5.0 and dual-microphone noise reduction, providing good call noise reduction effects; the water drop-shaped in-ear structure and silicone tips allow for comfortable wear, with a battery life of up to 30 hours when paired with the charging case, making it quite a decent configuration. Let’s take a detailed look at the disassembly!1. Unboxing the PaMu Slide Mini

The front of the packaging box features a rendering of the earphones and charging case, with the product model PaMu Slide Mini and Bluetooth certification in the upper left corner, and the Pamu logo in the upper right corner, while the bottom left corner shows Qualcomm aptX certification.

The back of the packaging box contains product information in multiple languages, with the Chinese version stating: Bluetooth 5.0 / dual-microphone noise reduction / touch buttons / IPX6 waterproof / 10 hours of music time / Qualcomm aptX audio. The bottom contains brand information and a barcode, with the product model T6C in black.

Contents inside the packaging box include earphones and charging case, charging cable, two sets of extra ear tips, user manual, and storage bag.

Two sets of ear tips of different sizes, totaling five pairs; Type-C charging cable.

The storage bag is printed with the Pamu brand logo.

The charging case features a matte texture and a frosted design, with the Pamu brand logo on top.

The front of the charging case has four battery indicator lights and a long groove for easy opening.

The back of the charging case has the charging interface below the hinge.

The bottom of the charging case has some product information: Model T6C, Input 5V⎓300mA, Charging case battery capacity: 400mAh, 1.48Wh, Xiamen Paimete Technology Co., Ltd.

Earphones have indicator lights to show charging status.

Gold-plated charging pins, with left and right indicators on the inside of the charging case.

I Love Audio Network used the ChargerLAB POWER-Z KM001C to test wired charging for the PaMu Slide Mini, with a charging voltage of 5.062V and a current of 0.337A.

I Love Audio Network used the ChargerLAB POWER-Z KT001 to test wireless charging for the PaMu Slide Mini, with a charging voltage of 5.0880V and a current of 0.3589A.

Weight of earphones and charging case: 52.4 grams.

Weight of charging case: 38.3 grams.

Weight of earphones: 14.1 grams.2. Disassembly of PaMu Slide Mini

The earphone compartment is covered with a rubber plug to hide a fixed screw.

Unscrewing the screw reveals two circuit boards connected by wires inside.

There are four magnets in total to hold the earphones in place, and two magnets to hold the cover.

Overview of the internal mainboard structure of the charging case.

Close-up of the back of the mainboard.

Close-up of the wireless charging coil.

The charging case has a built-in 400mAh, 3.7V lithium battery.

The battery has a protection circuit.

The front of the circuit board has a chip.

TI Texas Instruments BQ51013B fully integrated wireless charging receiver IC, used for wireless charging of the built-in battery.

Detailed information on TI Texas Instruments BQ51013B.

Four battery indicator lights.

Gold-plated charging pins.

Unmarked microcontroller for battery indication function.

Micro-source LP5300 over-voltage and over-current protection IC, used for input over-voltage and over-current protection.

According to the disassembly by I Love Audio Network, MOMAX BT1 TWS true wireless earphones, EDIFIER HECATE GM6 TWS gaming earphones, LolliPods TWS true wireless earphones, and AITECH E3 wireless Bluetooth earphones all use Micro-source protection IC.

In addition, many speaker products from brands such as Tmall Genie, Baidu, Xiaomi, Suning, Huawei, Honor, Tencent, and GGMM also use Micro-source’s power management solutions.

YuTai ETA9640 power management IC, 1A charging and discharging, synchronous rectification boost, built-in various protection functions, suitable for mobile power and Bluetooth earphone charging cases. According to I Love Audio Network disassembly, brands such as EDIFIER, JBL, and others have adopted YuTai’s TWS earphone charging case solutions.

Detailed information on YuTai ETA9640.

Now let’s begin the disassembly of the earphone part.

There is an indicator light on the top of the earphone.

The bottom of the earphone stem has a microphone opening.

The top of the earphone also has a microphone opening.

Gold-plated charging contacts.

The earphone sound hole is oval-shaped, with a dust net to prevent dust from entering.

Separating the earphone from the silicone tip.

Disassembling the earphone cavity and stem.

Bluetooth antenna and circular touch contact.

The conductive cloth is the Bluetooth antenna.

Touch contacts and Bluetooth antenna.

The inside of the earphone casing contains the battery and speaker.

Close-up of the earphone speaker, fixed with glue.

Speaker diameter is 6mm.

Comparison of the earphone mainboard and battery size with a one-yuan coin.

The battery has an integrated protection IC for battery protection.

The battery uses the LIR1454 model, with a diameter of 14mm and a thickness of 5.4mm.

The battery is from LIDEA Electronics.

According to I Love Audio Network disassembly, currently there are three products on the market: PaMu T5 true wireless stereo Bluetooth earphones, Soaiy true wireless Bluetooth earphones T5, and Kugou X5 true wireless Bluetooth earphones, all using LIDEA Electronics’ button-type lithium battery.

The tail of the earphone has a microphone opening, with a dust net to prevent dust from entering.

Gold-plated charging pins, connected to the earphone circuit board.

Close-up of the front of the earphone circuit board.

Close-up of the back of the earphone circuit board.

Close-up of the touch pins.

Silkscreen 8010 9813 MEMS silicon microphone, mainly used for picking up call sound waves.

Bluetooth antenna spring piece.

Silkscreen 8006 9813 MEMS silicon microphone, auxiliary microphone for active noise reduction.

Silkscreen 013C touch chip.

Winbond 25Q32FW 32M-bit external memory, used to store brand and other configuration information.

Detailed information on Winbond 25Q32FW.

Qualcomm QCC3020 ultra-low power Bluetooth audio SoC, with built-in programmable FLASH, supports Bluetooth 5.0 protocol, and includes DSP, similar to the QCC3026 series.

According to I Love Audio Network disassembly, products from brands such as BOSE, SONY, 1More, EDIFIER, vivo, etc., have extensively adopted Qualcomm solutions.

Comparison of features of Qualcomm QCC3020 series products.

Family photo of the disassembly. I Love Audio Network summarizes that PaMu’s TWS earphone products have always focused on the design of the charging case. Although the PaMu Slide Mini has simplified the design of the charging case compared to the PaMu Slide, it still features a “wave-like” curve on top; the earphone silhouette has undergone ergonomic design, with silicone protection on the cavity ensuring comfort during wear, and multiple pairs of ear tips of varying depths and sizes are included. The PaMu Slide Mini true wireless Bluetooth earphones adopt TI Texas Instruments’ wireless charging receiver solution, combined with YuTai’s power management, to charge the internal battery of the charging case and boost it for charging the earphones. The earphones use Qualcomm QCC3020 Bluetooth solution, supporting dual-microphone noise reduction technology combined with CVC software algorithms to improve call quality. Overall, it is a decent TWS earphone product.